Loose-leaf binder.



PATENTED DEC. 10, 190?.

J. O. DAWSON.

LOOSE LEAF BINDER. APPLIO'ATION FILED APR. 29, 1907.

30 "the filing prong removed.

' .in the structure to be hereinafter described embodging the 'm'vention,-"tl e parts of the one or more catches 16 are provided for lockend of thebinder. .Each catch comprises a cient width to permit the 'assage through it UNITED STATES PATENT OFFICE.

JAMES C. DAWSON, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SIEBER & TRUSSELL MANU- FACTURING COMPANY, A CORPORATION OF MISSOURI. v

Loose- EAF BINDER.

J'c all whom it may concern:

Be it known that I, JAMES C. DAWSON, a otizeri of the United States, andresident ofavhe-city of St. Louis, State of Missouri, have invented certain new and useful Improvements. in Loose-Leaf Binders, of which the following is a specification, and which are illustrated in the accompanying drawings, forming. a part therebf. The invention relates to loose leaf bindrls comp'risin a hinged metal frame adapted to be secure within the back section of a holder of book form, the parts of the frame being provided with oppositely directed filing prongs The object of theinventionis to simplify and improve t. the construction of binders of this type; and the invention is exemplified and illustrated in'the accompanying draw: ino's, in which v t 'iiigure 1 is a plan view of a binder frame frame eing in the closed positio Fig; 2-is'a transverse sectional view of the same; F' 3 is a perspective view illustrating a detail of the construction; Fig.4 is a sectional view showing the, binder frame 0 en; and ig. 5 is an end view-of the frame w en close Fi 6 is a detail of.one of the binder plates wit A pair of metalplates 10 and 11, of angu-' lar section but havin a rounded corner 12, i form the sides and bac of the binder, eachof the plates preferably having an integral inturned and flange 13. The plates 10 and 11 are hinged together, as by pivots 14, 15', which unite the flanges 13' at each end, and

ing the sitlon. v

'Asshown, such a catch is provided at each parts of the binder the closed poheaded stud 17, carried by a spring plate 18 secured by-clip's 29 to the end flange 13 of one of the plates 10 and 11, the shank of the stud being enlarged at 19 adjacent its base. The adjacent end flange 13 of the other plate is provided with aT-slot 20 to receive the stud 17, the throat of the slot being only of sufliof that part of the hank o the stud 17 which. is of reduced diameter. That part of the flange 13 which forms the margins of the Patented Dec. 10, 1907. No. 370,90

indicated at 21,22, to engage the base 19 of the sha'nk of the stud 2O a cam action when the binder is closed to cpress the stud.

Sheet-receivin pron s 23, which extend inwardly across 516 bin er frame, are'carried by each of the plates 10 and 11. As shown, 1

these prongs are curved to cross the frame'in the form of an arch, a'nd each is of such length that it extends from one of the plates 10', 11, into engagement with an aperture 24 rovided in the other plate for receivin the rec end of the prong, when the binder is closed.

The prongs 23 are secured to ,the frame members of thebinder in the following way: The plates 10, 11, are provided with slotted apertures; 25 for receiving the 'body of the prong, and-clamping lugs 26;,27, are turned outwardly from the plate adjacent such apertures. Each of thejprongs 23 has a flattened heel 28', which is seated upon the outer face of'the pillate', as 10, 11, between the lugs 26, 27, the wardly' through the aperture'25, its curved form giving it a (lllGCtlOIIWl'liOlfiS inclined to the plate and thuscausing it .tofill the slotted a erture. By clenching the lugs 26' 27 onto t e heel 28 o the prong,.an excee y secure fasteningisobtained without the use of solder, the use of solder being objectionable as it interferes with the subsequent plating of the parts.

If desired covers (not shown) may be rovided for the binder. They may be attac ed to the binder inany convenient way, as b riveting to the side plates 10 and 11. Pre erably the structure of the binder frame will be stiflened by providing upon the-ends of each of the plates 10, 1.1, a lip 30, to be overturned upon the adjacent end flange 13, this flange bein thus clamped between the lipand the cm of the plate seated, as shown at-3].

I claim as my invention Y 1. In a binder, in combination, a pair 0 relatively movablesidc plates, each of such plates having a prong rcceiving aperture, a pair hf clamping lugs turncdoutwardly on against which it is one of the plates adjacent the aperture, and a filing prong having a flattened heel, such ody of the prong extending inprong extending inwardly through the aperture in the last-named. plate and having its heel seated upon the outer face of such plate between the clamping lugs, the end of theprong being engageable with the aperture in flange.

the other plate and the clamping lugs being I clenched u on the 'heel of the prong,

2. In a inder, in combination, a pair of relatively movable side plates, one of such plates having an aperture elongated in a direction transverse to the length of the plate, a clamping lug turned outwardly on the plate adjacent the aperture, and a filing prong havin a flattened heel, the prong being extende being inclined to the plate'to fill the a erture, .the'heel of the rong bein seate u on the outerfaceoft e late and being he (1 to its seat by clenching tihe lug.

3. In a 'binder, in combination, a binder platein an le form, an end flange integral with one .lea of the plate and filling the angle between the leaves, and a lip integral with the other leaf of the. plate and inwardly through the'aperture in the plate and engaging the -flattene engaging the 4. In a binder, in combination, an apertured binder plate, a'filing the aperture, and means amping t heel of the prong against the rear face of the plate.

5. In a binder, in combination, an a erltured binder plate, a filing prong set through glonfi set throng the aperture, and apair of clamping lugs engaging the heel of the prong and the plate.

6. In a binder, tured bindin flattened hee erture, and; a clampln in combination, an aperplate, a filing prong havlng a portion of 1; e prong. JAMES C. DAWSON. Witnesses:

E. H. PARKINs, LoorsK. GILLSON.

and projecting through the'ape lug on the late and' inding it to 

